Multiphoton ionization mass spectrometry of nitrated polycyclic aromatic hydrocarbons

Yuanyuan Tang, Tomoko Imasaka, Shigekazu Yamamoto, Totaro Imasaka

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Abstract In order to suppress the fragmentation and improve the sensitivity for determination of nitrated polycyclic aromatic hydrocarbons (NPAHs), the mechanism of multiphoton ionization was studied for the following representative NPAHs, 9-nitroanthracene, 3-nitrofluoranthene, and 1-nitropyrene. The analytes were extracted from the PM2.5 on the sampling filter ultrasonically, and were measured using gas chromatography/multiphoton ionization/time-of-flight mass spectrometry with a femtosecond tunable laser in the range from 267 to 405 nm. As a result, a molecular ion was observed as the major ion and fragmentation was suppressed at wavelengths longer than 345 nm. Furthermore, the detection limit measured at 345 nm was measured to be the subpicogram level. The organic compounds were extracted from a 2.19 mg sample of particulate matter 2.5 (PM2.5), and the extract was subjected to multiphoton ionization mass spectrometry after gas chromatograph separation. The background signals were drastically suppressed at 345 nm, and the target NPAHs, including 9-nitroanthracene and 1-nitropyrene, were detected, and their concentrations were determined to be 5 and 3 pg/m3, respectively.

Original languageEnglish
Article number15460
Pages (from-to)109-114
Number of pages6
JournalTalanta
Volume140
DOIs
Publication statusPublished - Aug 1 2015

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1-nitropyrene
Polycyclic Aromatic Hydrocarbons
Ionization
Mass spectrometry
Mass Spectrometry
Particulate Matter
Ions
Laser tuning
Organic compounds
Gas chromatography
Gas Chromatography
Limit of Detection
Lasers
Gases
Sampling
Wavelength
9-nitroanthracene

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

Cite this

Multiphoton ionization mass spectrometry of nitrated polycyclic aromatic hydrocarbons. / Tang, Yuanyuan; Imasaka, Tomoko; Yamamoto, Shigekazu; Imasaka, Totaro.

In: Talanta, Vol. 140, 15460, 01.08.2015, p. 109-114.

Research output: Contribution to journalArticle

Tang, Yuanyuan ; Imasaka, Tomoko ; Yamamoto, Shigekazu ; Imasaka, Totaro. / Multiphoton ionization mass spectrometry of nitrated polycyclic aromatic hydrocarbons. In: Talanta. 2015 ; Vol. 140. pp. 109-114.
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